AM186ER-25KCW AMD [Advanced Micro Devices], AM186ER-25KCW Datasheet - Page 82

• Manufacturer Part Number: AM186ER-25KCW
• Description: High-Performance, 80C186- and 80C188-Compatible, 16-Bit Embedded Microcontrollers with RAM
• Manufacturer: AMD [Advanced Micro Devices]

Switching Characteristics over Commercial and Industrial Operating Ranges
PSRAM Write Cycle (40 MHz and 50 MHz)
Notes:
All timing parameters are measured at V
output test conditions are with C
a Testing is performed with equal loading on referenced pins.
b This parameter applies to the DEN, WR, WHB and WLB signals.
82
General Timing Responses
Write Cycle Timing Responses
No.
10
11
20
23
80
81
84
30
31
32
33
34
65
68
87
5
7
8
9
Symbol
t
t
t
t
t
t
t
t
t
t
CVCTV
CLDOX
CVCTX
t
t
t
t
t
t
CLCLX
CLCSL
t
t
t
WLWH
WHDX
CHDX
WHLH
CHLH
AVWL
CHAV
CLAV
CLDV
CHLL
LHAV
AVBL
LHLL
LRLL
Description
AD Address Valid Delay
Data Valid Delay
Status Hold Time
ALE Active Delay
ALE Width
ALE Inactive Delay
Control Active Delay 1
ALE High to Address Valid
LCS Inactive Delay
LCS Active Delay
LCS Precharge Pulse Width
Data Hold Time
Control Inactive Delay
WR Pulse Width
WR Inactive to ALE High
Data Hold after WR
A Address Valid to WR Low
CLKOUTA High to A Address Valid
A Address Valid to WHB, WLB Low
Parameter
Am186
L
=50 pF. For switching tests, V
TM
ER and Am188
CC
(a)
(b)
/2 with 50 pF loading on CLKOUTA, unless otherwise noted. All
(b)
(a)
t
t
CLCL
CLCL
TM
2t
t
t
CLCL
t
CLCL
CLCL
ER Microcontrollers Data Sheet
CHCL
t
CLCH
+t
+ t
IL
Min
7.5
CHCL
–10=15
CLCH
–5=20
–10=40
0
0
0
0
0
0
0
0
0
=0.3 V and V
–1.25
40 MHz
–2
–1.25
–1.25
Max
Preliminary
12
12
12
12
12
12
12
12
10
18
IH
=V
CC
t
t
CLCL
CLCL
–0.3 V.
t
CHCL
t
CLCH
+t
+ t
Min
CHCL
15
35
12
0
0
0
0
5
0
0
0
0
0
–1.25
50 MHz
CLCH
–2
–1.25
–1
Max
10
10
10
10
10
10
10
10
10
15
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns